CN118053395A

CN118053395A - LED drive control structure, LED lamp panel and display device

Info

Publication number: CN118053395A
Application number: CN202410395094.0A
Authority: CN
Inventors: 孙俊岳; 于海明; 李德盛
Original assignee: Huayuan Zhixin Semiconductor Shenzhen Co ltd; Huayuan Zhixin Semiconductor Tianjin Co ltd
Current assignee: Huayuan Zhixin Semiconductor Shenzhen Co ltd; Huayuan Zhixin Semiconductor Tianjin Co ltd
Priority date: 2024-04-02
Filing date: 2024-04-02
Publication date: 2024-05-17

Abstract

The invention provides an LED driving control structure, an LED lamp panel and a display device, comprising: the active LED module comprises a first LED light-emitting unit and an LED driving unit; wherein the first LED light emitting unit is integrated in the LED driving unit; the passive LED module comprises a second LED light-emitting unit; the second LED light-emitting unit is independently arranged on the lamp panel and is connected with the active LED module; the LED driving unit is used for driving the first LED light-emitting unit and the second LED light-emitting unit. An LED lamp panel comprises at least one LED driving control structure. A display device comprises the LED lamp panel. The technical scheme provided by the invention solves the problem of how to reduce or even eliminate the area occupied by the driving chip alone, and provides the LED driving control structure for improving the distribution density of LEDs.

Description

LED drive control structure, LED lamp panel and display device

Technical Field

The invention relates to the field of LED liquid crystal display, in particular to an LED driving control structure, an LED lamp panel and a display device.

Background

The LED lamp panel assembly of the direct type multi-partition liquid crystal backlight comprises: the structure of the PM driving scheme and the structure of the AM driving scheme. Wherein, PM drive scheme structure's characteristics are: the LED driving chip and the LED array of the PCB double-sided cloth piece are arranged on different circuit layers. The AM driving scheme structure is characterized in that: the single-sided cloth piece can be used for single-sided wiring, and the LED driving chip and the LED array are arranged on the same circuit layer.

Traditional PM drive schemes are relatively complex in design and high in PCB cost compared with AM. In the AM driving scheme structure, the LEDs and the driving chips share the same circuit surface, and when the distribution density of the LEDs is increased, the occupied area and wiring space of the LED driving chips are reduced, so that the ultra-thin and ultra-multi-partition liquid crystal backlight requirement cannot be met.

Therefore, developing a driving scheme structure of an LED lamp panel assembly with high LED distribution density, ultra-thin and ultra-multi-partition liquid crystal backlight needs is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The invention provides an LED driving control structure, an LED lamp panel and a display device, which are used for solving the problem of how to reduce or even eliminate the area occupied by a driving chip alone.

According to a first aspect of the present invention, there is provided an LED driving control structure comprising:

The active LED module comprises a first LED light-emitting unit and an LED driving unit; wherein the first LED light emitting unit is integrated in the LED driving unit;

The passive LED module is connected with the active LED module; the passive LED module comprises a second LED light-emitting unit; the second LED light-emitting units are independently arranged on the lamp panel;

the LED driving unit is used for driving the first LED light-emitting unit and the second LED light-emitting unit.

Optionally, the active LED module includes a driving output pin;

The second LED light-emitting unit is connected with the first LED light-emitting unit through the driving output pin, and the LED driving unit.

Optionally, the number of the second LED light emitting units is one or more than two; when the number of the second LED light-emitting units is more than two, a plurality of the second LED light-emitting units are connected in series.

Optionally, the number of the second LED light emitting units is more than two.

Optionally, the active LED module includes more than two driving output pins;

More than two second LED light-emitting units are connected with the first LED light-emitting unit and the LED driving unit through corresponding driving output pins respectively;

When the driving output pins are connected with more than two second LED light-emitting units, a plurality of second LED light-emitting units connected with each driving output pin are connected in series.

Optionally, the LED driving units simultaneously drive the corresponding second LED light emitting units through different driving output pins, or time-sharing drive the corresponding second LED light emitting units.

Optionally, the LED driving unit is a high-side driving unit or a low-side driving unit.

According to a second aspect of the present invention, there is provided an LED lamp panel comprising at least one of the LED drive control structures of any one of the first aspect of the present invention.

According to a third aspect of the present invention, there is provided a display device including the LED lamp panel according to the second aspect of the present invention.

According to the LED driving control structure provided by the invention, the first LED light-emitting unit is integrated in the LED driving unit to form the active LED module; the second LED light-emitting units independently arranged on the lamp panel are connected with the active LED module; so that the LED driving unit can drive the first LED lighting unit and the second LED lighting unit. Therefore, in the technical scheme provided by the invention, the design scheme of the LED driving unit integrated with the first LED light-emitting unit replaces the traditional scheme of the LED driving unit which needs to occupy a certain space independently, and the space for placing the LED driving chip independently is vacated, so that the area occupied by the driving chip independently is reduced or even eliminated, and meanwhile, the space occupied by wiring is reduced, so that the arrangement density of the LED lamp is improved.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic block diagram of an LED driving control structure according to an embodiment of the present invention;

FIG. 2 is a schematic diagram showing an LED driving control structure according to an embodiment of the present invention;

FIG. 3 is a schematic diagram showing a second embodiment of an LED driving control structure;

FIG. 4 is a schematic diagram of an embodiment of the present invention for providing an LED lamp panel;

FIG. 5 is a schematic diagram showing a structure of an LED lamp panel according to an embodiment of the present invention;

FIG. 6 is a schematic diagram showing an embodiment of an active LED module according to the present invention;

FIG. 7 is a schematic diagram showing a second embodiment of an active LED module according to the present invention;

FIGS. 8-11 are schematic illustrations of specific configurations of different active LED modules provided in other exemplary embodiments of the present invention;

Reference numerals illustrate:

1-an LED driving control structure;

10-a passive LED module;

101-a second LED lighting unit;

11-an active LED module;

110-an LED driving unit;

111-a first LED lighting unit.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the structure of the traditional AM driving scheme, as the LED lamp and the driving chip share the same circuit surface, the residual occupied area and wiring space of the driving chip can be reduced along with the requirement of the increasingly larger LED distribution density; in the lamp panel structure of the conventional AM driving scheme, the driving chip often occupies a large space due to the independent design schemes of the LEDs and the driving chip, so the lamp panel structure of the conventional AM driving scheme cannot meet the requirements of ultra-thin and ultra-multi-partition liquid crystal backlight.

Therefore, it is desirable to reduce or even eliminate the area occupied by the driving chips alone to produce an LED lamp panel assembly with high LED distribution density, ultra-thin, ultra-multi-segmented liquid crystal backlight.

In view of this, the inventors of the present application have proposed an LED driving control structure including an LED array arranged on one side formed on a single-sided PCB; the LED array consists of two LED luminous units, and specifically comprises: an active LED light emitting unit and a passive LED light emitting unit; the passive LED light-emitting unit comprises an LED lamp packaged by a single body, and the active LED unit comprises an LED lamp integrated with an LED driving module; the LED lamp packaged by the single body in the passive LED unit is connected with the LED driving module and the LED lamp in the passive LED unit; thereby realizing the control of the LED driving module on the LED lamp integrated with the LED driving module and the LED lamp which is connected with the LED driving module and is packaged by a single body. In the technical scheme provided by the application, the LED driving chips which are separately and spatially arranged in the structure of the AM driving scheme are eliminated, and the LED driving modules integrated in the active LED units are adopted to replace the LED driving chips; therefore, the positions of the driving chips do not need to be specially reserved in the LED arrangement gaps, the area occupied by the driving chips alone is reduced or even eliminated, and the arrangement density of the LED lamps is improved; therefore, the LED lamp panel assembly with high LED distribution density, ultra-thin and ultra-multi-partition liquid crystal backlight requirements is provided.

The technical scheme of the invention is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.

Referring to fig. 1-7, according to an embodiment of the present invention, there is provided an LED driving control structure 1, as shown in fig. 1, comprising:

An active LED module 11 including a first LED light emitting unit 111 and an LED driving unit 110; wherein the first LED lighting unit 111 is integrated in the LED driving unit 110;

A passive LED module 10 connected to the active LED module 11; the passive LED module 10 includes a second LED lighting unit 101; the second LED light emitting unit 101 is independently arranged on the lamp panel;

Wherein the LED driving unit 110 is configured to drive the first LED light emitting unit 111 and the second LED light emitting unit 101.

Wherein, the first LED lighting unit 111 or the second LED lighting unit 101 is an LED lamp.

In the LED driving control structure 1 provided by the present invention, the ratio of the first LED light emitting unit 111 to the second LED light emitting unit 101 is variable, and may be implemented in the following manner, specifically, as described in the first embodiment and the second embodiment, as follows: referring to fig. 2 and fig. 7, in one embodiment, as shown in fig. 7, the active LED module 11 includes a driving output pin;

wherein the second LED lighting unit 101 is connected to the first LED lighting unit 111 and the LED driving unit 110 through the driving output pin.

The active LED module 11 further includes LED pins connected to the first LED light emitting unit 111, and two driving module power supply pins and driving module signal pins connected to the LED driving unit 110. The pins are all conventional pins of a conventional driving chip, and the present invention is not repeated here. In one embodiment, the number of the second LED light emitting units 101 is one or more than two; wherein, when the number of the second LED lighting units 101 is more than two, a plurality of the second LED lighting units 101 are connected in series (not shown in the figure).

In a specific embodiment, as shown in fig. 2, one partition in the LED driving control structure 1 is composed of an LED driving unit 110 and two LED lamps connected in series, one being an LED lamp in the active LED module 11 and one being an LED lamp in the passive LED module 10. In this embodiment, the driving module in the active LED module 11 may implement driving of only one LED partition.

In other embodiments, in one partition of the LED driving control structure 1, the number of LED lamps in the passive LED module 10 may be greater than 1, and at this time, the ratio between the LED lamps in the passive LED module 10 and the LED lamps in the active LED module 11 is greater than 1. For example: when the LED lamps in one active LED module 11 are connected to the LED lamps in two active LED modules 11, the ratio of the first LED lighting unit 111 to the second LED lighting unit 101 is 1:2 (not shown in the figure).

Next, referring to fig. 3 and 6, when the number of available paths of the LED driving module in the active LED module 11 is greater than 1, the ratio of the first LED light emitting unit 111 to the second LED light emitting unit 101 in the LED driving control structure 1 is also changed. In a specific embodiment, the number of the second LED light emitting units 101 is more than two.

In one embodiment, as shown in fig. 6, the active LED module 11 includes more than two driving output pins;

Wherein more than two second LED light emitting units 101 are connected to the first LED light emitting unit 111 and the LED driving unit 110 through corresponding driving output pins, respectively; each driving output pin is connected with one LED partition, and therefore, the LED driving unit 110 in the active LED module 11 can realize the driving of two or more LED partitions;

As shown in fig. 3, when the driving output pins are connected to more than two second LED light emitting units 101, a plurality of second LED light emitting units 101 connected to each driving output pin are connected in series.

In a specific example, the ratio of the first LED lighting unit 111 to the second LED lighting unit 101 is 1:11.

One partition of the LED driving control structure 1 is composed of 6 LED lamps, one of the first LED light emitting units 111, 11 second LED units. The LED driving unit 110 in the active LED module 11 can realize driving of two LED partitions.

In one embodiment, the LED driving units 110 simultaneously drive the corresponding second LED lighting units 101 through different driving output pins, or time-sharing drive the corresponding second LED lighting units 101.

In one embodiment, the LED driving unit 110 is a high side driving unit or a low side driving unit.

In summary, according to the LED driving control structure 1 provided by the present invention, the first LED light emitting unit 111 is integrated in the LED driving unit 110, so that a space for separately placing the LED driving chips is left, and when the LED driving unit 110 drives the first LED light emitting unit 111 and the second LED light emitting unit 101, the additional occupied space of the LED driving chips is reduced or even eliminated, and the arrangement density of the LEDs is improved.

According to an embodiment of the present invention, there is also provided an LED lamp panel, including at least one LED driving control structure 1 according to any one of the foregoing embodiments of the present invention.

When the driving output pin of one of the active LED modules 11 is included; the LED lamp panel can comprise a plurality of groups of LED drive control structures 1; when two groups of LED driving control structures 1 are included, the structure of the LED lamp panel is shown in fig. 4.

When more than two of the driving output pins are included in the active LED module 11; the LED lamp panel can comprise a plurality of groups of LED drive control structures 1; when eight groups of the LED driving control structures 1 are included, the structure of the LED lamp panel is shown in fig. 5.

In other embodiments of the present invention, the number of driving output pins may be more than two.

In a typical example, as shown in fig. 8, for example, there may be 3, and the number of the second LED light emitting units connected to each driving output pin may be 4, and the number of the first LED light emitting units connected to each driving output pin may be 4.

In an embodiment of the present invention, the number of LED lamps in the first LED lighting unit may be two or more. When the number of the LED lamps in the first LED light emitting unit may be two or more, the connection manner between the first LED light emitting unit and the second LED light emitting unit is similar to that described in the foregoing embodiment, and the disclosure is not repeated herein.

In one embodiment, in the first LED light emitting unit, two or more LED lamps are connected in parallel.

In a typical example, as shown in fig. 9, the number of LED lamps in the first LED light emitting unit is 2, and two LED lamps are connected in parallel, specifically, one LED lamp is connected to the LED driving unit, and one LED lamp is connected to the driving output pin.

In another embodiment, in the first LED lighting unit, two or more LED lamps are connected in series.

In a typical example, as shown in fig. 10, the number of LED lamps in the first LED light emitting unit is 2, and two LED lamps are connected in series; one driving output pin is correspondingly arranged, one driving output pin is connected with a second LED light-emitting unit, and the second LED light-emitting unit comprises two LED lamps which are connected in series.

In other typical examples, as shown in fig. 11, the number of LED lamps in the first LED light emitting unit is 4, and one driving output pin is correspondingly provided, two LED lamps are connected with the driving output pin, and are connected in series, and the other two LED lamps are connected with the LED driving unit, and are connected in series.

According to another embodiment of the present invention, a display device is provided, including the LED lamp panel according to the foregoing embodiment of the present invention.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. An LED driving control structure, characterized by comprising:

2. The LED drive control structure of claim 1, wherein the active LED module includes a drive output pin therein;

3. The LED driving control structure according to claim 2, wherein the number of the second LED light emitting units is one or more than two; when the number of the second LED light-emitting units is more than two, a plurality of the second LED light-emitting units are connected in series.

4. The LED driving control structure according to claim 1, wherein the number of the second LED light emitting units is two or more.

5. The LED drive control structure of claim 4, wherein more than two of said drive output pins are included in said active LED module;

6. The LED driving control structure according to claim 5, wherein the LED driving units simultaneously drive the corresponding second LED light emitting units through different driving output pins, or time-division drive the corresponding second LED light emitting units, respectively.

7. The LED driving control structure according to claim 1, wherein the LED driving unit is a high-side driving unit or a low-side driving unit.

8. An LED light panel comprising at least one LED drive control structure of any one of claims 1-7.

9. A display device comprising the LED lamp panel of claim 9.